Represents the number of former employees.

No definition available.

Name:	flna_NumberOfFormerEmployees
Namespace Prefix:	flna_
Data Type:	xbrli:integerItemType
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- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-10

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_LitigationCaseAxis=flna_ViolationsOfFederalSecuritiesLawsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=flna_ShareholderDerivativeActionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=flna_ShareholderDerivativeActionsTexasCourtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=flna_ShareholderDerivativeActionsTexasStateCourtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=flna_ShareholderDerivativeActionsDelawareCourtMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	srt_LitigationCaseAxis=flna_AntislappLawsuitMember
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Note 10 - Contingencies (Details Textual) $ in Thousands						2 Months Ended	24 Months Ended
Note 10 - Contingencies (Details Textual) $ in Thousands	Nov. 12, 2025	Sep. 06, 2024	Aug. 06, 2024	Mar. 18, 2024	Jun. 30, 2022	Oct. 26, 2021	Nov. 09, 2023	Dec. 31, 2025 USD ($)	Oct. 31, 2025 USD ($)	May 31, 2025 USD ($)	Mar. 31, 2025 USD ($)
Estimated Litigation Liability								$ 32,750
Loss Contingency Accrual								0			$ 3,000
Violations of Federal Securities Laws [Member]
Loss Contingency, New Claims Filed, Number					1	4
Estimated Litigation Liability								$ 31,250		$ 31,250
Shareholder Derivative Actions [Member]
Loss Contingency, New Claims Filed, Number		2		2			5
Shareholder Derivative Actions, Texas Court [Member]
Loss Contingency, New Claims Filed, Number	4						3
Shareholder Derivative Actions, Texas State Court Member
Loss Contingency, New Claims Filed, Number							1
Shareholder Derivative Actions, Delaware Court [Member]
Loss Contingency, New Claims Filed, Number							1
Anti-SLAPP Lawsuit [Member]
Estimated Litigation Liability									$ 2,500
Number of Former Employees			2